Analysis

  • max time kernel
    150s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    13/02/2024, 02:38

General

  • Target

    2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe

  • Size

    990KB

  • MD5

    ae507105cceba5aacb48465edc216829

  • SHA1

    3ce82cbc3bfe6ce6cc80548b3972fe50474ee58d

  • SHA256

    2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847

  • SHA512

    789fb309e65a1cff6b56ea1101aaa81739ab7a9ac4082aea12a6d4349cb2b18daf4b1417817e4425dadcd3171be7b4946f032ffe32ff5e5dc5497d6c8ae0e5bf

  • SSDEEP

    24576:5Xz87bPA2b+O0v7c+6ShVZ5II39pexAJSgEiYG77:5Xz87k/O0vAkhVZ63KMG7

Malware Config

Extracted

Family

remcos

Botnet

DESK

C2

198.27.121.194:2024

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    Remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    false

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-EQJXDT

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

    Remcos is a closed-source remote control and surveillance software.

  • Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003) 29 IoCs
  • Detects executables built or packed with MPress PE compressor 20 IoCs
  • Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers 2 IoCs
  • Detects executables referencing many email and collaboration clients. Observed in information stealers 2 IoCs
  • NirSoft MailPassView 2 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 2 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 6 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 22 IoCs
  • Suspicious behavior: MapViewOfSection 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of WriteProcessMemory 44 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe
    "C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1076
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\LCIBkTUxHQE.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2124
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\LCIBkTUxHQE" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1B4E.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1744
    • C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe
      "C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:472
      • C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe
        C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe /stext "C:\Users\Admin\AppData\Local\Temp\ryzjwbz"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:2760
      • C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe
        C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe /stext "C:\Users\Admin\AppData\Local\Temp\ryzjwbz"
        3⤵
          PID:2780
        • C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe
          C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe /stext "C:\Users\Admin\AppData\Local\Temp\csebxukpul"
          3⤵
            PID:1332
          • C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe
            C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe /stext "C:\Users\Admin\AppData\Local\Temp\csebxukpul"
            3⤵
            • Accesses Microsoft Outlook accounts
            PID:1568
          • C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe
            C:\Users\Admin\AppData\Local\Temp\2054ee677f5e0713c73a500d3a2a8b6769a6671ff18f7f62b24f68ca6d00f847.exe /stext "C:\Users\Admin\AppData\Local\Temp\eusmyevritzxt"
            3⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:1688

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            • C:\Users\Admin\AppData\Local\Temp\ryzjwbz

              Filesize

              2B

              MD5

              f3b25701fe362ec84616a93a45ce9998

              SHA1

              d62636d8caec13f04e28442a0a6fa1afeb024bbb

              SHA256

              b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

              SHA512

              98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

            • C:\Users\Admin\AppData\Local\Temp\tmp1B4E.tmp

              Filesize

              1KB

              MD5

              3ad8cce0052cd1ae6b63f72b5681537c

              SHA1

              8e7c0b35bfa97c9304748ff38a660583467564f4

              SHA256

              700dfd9f237cb26d0ca5deafaa626a168563232c6f8dff49cbbfba5c97f71793

              SHA512

              448d812053b9f2795b426b6298029faacb53a62e34b2e4cee35f388e1a9fcf77129b5e14c0af2b8660580c9c3ae0a9a3c5e00ba3e13c351c8fd28d2049361a70

            • memory/472-51-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/472-93-0x0000000010000000-0x0000000010019000-memory.dmp

              Filesize

              100KB

            • memory/472-20-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/472-101-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/472-100-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/472-99-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/472-98-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/472-22-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/472-24-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/472-28-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/472-30-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/472-32-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

              Filesize

              4KB

            • memory/472-34-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/472-36-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/472-97-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/472-96-0x0000000010000000-0x0000000010019000-memory.dmp

              Filesize

              100KB

            • memory/472-95-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/472-94-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/472-53-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/472-14-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/472-38-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/472-39-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/472-40-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/472-92-0x0000000010000000-0x0000000010019000-memory.dmp

              Filesize

              100KB

            • memory/472-90-0x0000000010000000-0x0000000010019000-memory.dmp

              Filesize

              100KB

            • memory/472-45-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/472-91-0x0000000010000000-0x0000000010019000-memory.dmp

              Filesize

              100KB

            • memory/472-87-0x0000000010000000-0x0000000010019000-memory.dmp

              Filesize

              100KB

            • memory/472-46-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/472-47-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/472-48-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/472-50-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/472-16-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/472-85-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/472-18-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/472-54-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/472-49-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/472-57-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/472-56-0x0000000000400000-0x0000000000482000-memory.dmp

              Filesize

              520KB

            • memory/1076-8-0x0000000004ED0000-0x0000000004F10000-memory.dmp

              Filesize

              256KB

            • memory/1076-4-0x0000000000B30000-0x0000000000B3A000-memory.dmp

              Filesize

              40KB

            • memory/1076-0-0x0000000001070000-0x000000000116E000-memory.dmp

              Filesize

              1016KB

            • memory/1076-37-0x0000000074280000-0x000000007496E000-memory.dmp

              Filesize

              6.9MB

            • memory/1076-7-0x0000000074280000-0x000000007496E000-memory.dmp

              Filesize

              6.9MB

            • memory/1076-1-0x0000000074280000-0x000000007496E000-memory.dmp

              Filesize

              6.9MB

            • memory/1076-6-0x0000000000FA0000-0x0000000001066000-memory.dmp

              Filesize

              792KB

            • memory/1076-2-0x0000000004ED0000-0x0000000004F10000-memory.dmp

              Filesize

              256KB

            • memory/1076-3-0x00000000005F0000-0x0000000000604000-memory.dmp

              Filesize

              80KB

            • memory/1076-5-0x0000000000B80000-0x0000000000B8E000-memory.dmp

              Filesize

              56KB

            • memory/1568-86-0x0000000000400000-0x0000000000457000-memory.dmp

              Filesize

              348KB

            • memory/1568-71-0x0000000000400000-0x0000000000457000-memory.dmp

              Filesize

              348KB

            • memory/1568-70-0x0000000000400000-0x0000000000457000-memory.dmp

              Filesize

              348KB

            • memory/1568-65-0x0000000000400000-0x0000000000457000-memory.dmp

              Filesize

              348KB

            • memory/1688-73-0x0000000000400000-0x0000000000424000-memory.dmp

              Filesize

              144KB

            • memory/1688-78-0x0000000000400000-0x0000000000424000-memory.dmp

              Filesize

              144KB

            • memory/1688-75-0x0000000000400000-0x0000000000424000-memory.dmp

              Filesize

              144KB

            • memory/1688-77-0x0000000000400000-0x0000000000424000-memory.dmp

              Filesize

              144KB

            • memory/1688-76-0x0000000000400000-0x0000000000424000-memory.dmp

              Filesize

              144KB

            • memory/2124-44-0x0000000002550000-0x0000000002590000-memory.dmp

              Filesize

              256KB

            • memory/2124-41-0x000000006E6D0000-0x000000006EC7B000-memory.dmp

              Filesize

              5.7MB

            • memory/2124-42-0x0000000002550000-0x0000000002590000-memory.dmp

              Filesize

              256KB

            • memory/2124-55-0x000000006E6D0000-0x000000006EC7B000-memory.dmp

              Filesize

              5.7MB

            • memory/2124-43-0x000000006E6D0000-0x000000006EC7B000-memory.dmp

              Filesize

              5.7MB

            • memory/2760-83-0x0000000000400000-0x0000000000478000-memory.dmp

              Filesize

              480KB

            • memory/2760-60-0x0000000000400000-0x0000000000478000-memory.dmp

              Filesize

              480KB

            • memory/2760-58-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

              Filesize

              4KB

            • memory/2760-66-0x0000000000400000-0x0000000000478000-memory.dmp

              Filesize

              480KB

            • memory/2760-72-0x0000000000400000-0x0000000000478000-memory.dmp

              Filesize

              480KB

            • memory/2760-64-0x0000000000400000-0x0000000000478000-memory.dmp

              Filesize

              480KB